Lactose (Mixture of alpha and beta Isomers)

cas: 63-42-3 — see every product listed under this CAS number, including other names

Lactose (Mixture of alpha and beta Isomers) (CAS 63-42-3) is a chemical reagent available from Chemat. Available pack sizes: on request. Offered by: Chemat Brand.

brandChemat Brand
catalog numberULL092002
cas63-42-3
sizeon request
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Structural formula: {0} (CAS {1})

Lactose is a glycosylglucose disaccharide, found most notably in milk, that consists of D-galactose and D-glucose fragments bonded through a beta-14 glycosidic linkage. The glucose fragment can be in either the alpha- or beta-pyranose form, whereas the galactose fragment can only have the beta-pyranose form. It has a role as a human metabolite.

Source: ChEBI

Identity
Molecular formulaC12H22O11
Molecular weight342.30 g/mol
IUPAC name(2R,3R,4S,5R,6S)-2-(hydroxymethyl)-6-[(2R,3S,4R,5R)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxyoxane-3,4,5-triol
InChIKeyGUBGYTABKSRVRQ-QKKXKWKRSA-N
SMILESC([C@@H]1[C@@H]([C@@H]([C@H]([C@@H](O1)O[C@@H]2[C@H](OC([C@@H]([C@H]2O)O)O)CO)O)O)O)O

Computed by PubChem (NCBI)

Synonyms: beta-D-Gal-(1->4)-D-Glc, beta-D-Galp-(1->4)-D-Glcp, 1-beta-D-Galactopyranosyl-4-D-glucopyranose, beta-D-galactopyranosyl-(1->4)-D-glucopyranose, Lactin, Anhydrous lactose, Lactose anhydrous, Aletobiose, Galactinum, Tablettose
Related forms of this compound
(2R,3S,4S,5R,6R)-2-(hydroxymethyl)-6-[(2R,3S,4R,5R,6R)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxyoxane-3,4,5-triol C12H22O11
(2R,3S,4S,5S,6R)-2-(hydroxymethyl)-6-[(2R,3S,4R,5S)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxyoxane-3,4,5-triol C12H22O11
(2R,3S,4S,5S,6S)-2-(hydroxymethyl)-6-[(2R,3S,4R,5S)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxyoxane-3,4,5-triol C12H22O11
(2R,3R,4S,5R,6S)-2-(hydroxymethyl)-6-[(2R,3S,4R,5R,6R)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxyoxane-3,4,5-triol C12H22O11
(2R,3S,4S,5R,6R)-2-(hydroxymethyl)-6-[(2R,3S,4R,5R,6S)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxyoxane-3,4,5-triol C12H22O11
(2R,3R,4S,5R,6R)-2-(hydroxymethyl)-6-[(2R,3R,4R,5R)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxyoxane-3,4,5-triol C12H22O11
(2R,3R,4S,5R,6S)-2-(hydroxymethyl)-6-[(2R,3S,4R,5R,6S)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxyoxane-3,4,5-triol C12H22O11
Isomers (same molecular formula)
2-(hydroxymethyl)-6-[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxane-3,4,5-triol C12H22O11
(2S,3R,4S,5R,6R)-2-[(2R,3S,4S,5R)-4,5-dihydroxy-2,5-bis(hydroxymethyl)oxolan-3-yl]oxy-6-(hydroxymethyl)oxane-3,4,5-triol C12H22O11
(3S,4S,5R,6R)-6-(hydroxymethyl)-4-[(2R,3S,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxane-2,3,5-triol C12H22O11
(3R,4S,5R,6R)-6-(hydroxymethyl)-4-[(2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxane-2,3,5-triol C12H22O11
(2R,3S,4S,5R)-2,4,5,6-tetrahydroxy-3-[(2R,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyhexanal C12H22O11

Also listed as

Lactose, 98% Combi-blocks CAS 63-42-3
D-Lactose Anhydrous, >95% (HPLC) TRC CAS 63-42-3
D-Lactose, >95% (HPLC) TRC CAS 63-42-3
D-Lactose Dr. Ehrenstorfer CAS 63-42-3
D-Lactose 1000 µg/mL in Water Dr. Ehrenstorfer CAS 63-42-3
Lactose/ 99.17% (existing batch purity) TargetMol CAS 63-42-3
Lactose - anhydrous Biosynth CAS 63-42-3
Lactose, anhydrous, 99.00% Chemat CAS 63-42-3
Lactose, anhydrous, Ph. Eur., USP grade, 99.50% Chemat CAS 63-42-3
LACTOSE (ANHYDROUS) Sigma-Aldrich CAS 63-42-3
LACTOSE, TESTED ACCORDING TO PH.EUR. Sigma-Aldrich CAS 63-42-3
Lactose, 98.0% MedChemExpress CAS 63-42-3
Lactose (Standard), 99.90% MedChemExpress CAS 63-42-3